US11440390B2 - Electrical drive unit and also drive arrangement for an electrical drive unit - Google Patents

Electrical drive unit and also drive arrangement for an electrical drive unit Download PDF

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Publication number
US11440390B2
US11440390B2 US16/677,398 US201916677398A US11440390B2 US 11440390 B2 US11440390 B2 US 11440390B2 US 201916677398 A US201916677398 A US 201916677398A US 11440390 B2 US11440390 B2 US 11440390B2
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Prior art keywords
electrical drive
drive unit
torque
torque converter
flow chamber
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US16/677,398
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US20200139801A1 (en
Inventor
Johannes Lamers
Rolf Meinhard
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Schaeffler Technologies AG and Co KG
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Schaeffler Technologies AG and Co KG
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Assigned to Schaeffler Technologies AG & Co. KG reassignment Schaeffler Technologies AG & Co. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MEINHARD, ROLF, LAMERS, JOHANNES
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/10—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of fluid gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H41/00—Rotary fluid gearing of the hydrokinetic type
    • F16H41/04—Combined pump-turbine units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H41/00—Rotary fluid gearing of the hydrokinetic type
    • F16H41/24—Details
    • F16H41/30—Details relating to venting, lubrication, cooling, circulation of the cooling medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
    • F16H45/02—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/17—Toothed wheels
    • F16H55/18—Special devices for taking up backlash
    • F16H55/20—Special devices for taking up backlash for bevel gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F16H57/0441—Arrangements of pumps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/108—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction clutches
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/001—Arrangement or mounting of electrical propulsion units one motor mounted on a propulsion axle for rotating right and left wheels of this axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/03—Lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/0021—Transmissions for multiple ratios specially adapted for electric vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
    • F16H47/06—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0476—Electric machines and gearing, i.e. joint lubrication or cooling or heating thereof

Definitions

  • the disclosure relates to an electrical drive unit for an electrically at least partially driveable motor vehicle and also to a drive arrangement for an electrically at least partially driveable motor vehicle, comprising an electrical drive unit according to the disclosure.
  • the prior art discloses electrical drive units which comprise electrical drive machines.
  • these electrical drive machines usually have a relatively small spread.
  • transmission units of this kind are usually associated with losses in respect of convenience for a driver of a motor vehicle which is equipped with the known electrical drive unit or with a relatively complicated design on account of the disconnection of the torque transmission path required during shifting.
  • Continuously variable transmission units are also relatively complex in respect of their design and require a large amount of installation space.
  • the object of the present disclosure is to provide an electrical drive unit and a drive arrangement for an electrical drive unit which render it possible to combine a wide range of applications of the electrical drive machine with optimum driving operation of a motor vehicle which is equipped with said electrical drive machine with a low investment requirement.
  • the disclosure relates to an electrical drive unit for an electrically at least partially driveable motor vehicle, comprising an electrical drive machine and also an output device for transmitting a torque, which is provided by the electrical drive machine, to driven vehicle wheels of a motor vehicle.
  • the electrical drive unit furthermore comprises a torque converter, which is arranged in the torque transmission path between a rotor of the electrical drive machine and the output device, for the purpose of matching the torque which is provided by the electrical drive machine to a respective torque requirement.
  • a clutch for disconnecting and opening the torque transmission path between the electrical drive machine and the output device is arranged parallel to the torque converter.
  • this clutch is designed as a friction clutch, a so-called lock-up clutch, with which a rotationally fixed connection of the two clutch sides and accordingly the two sides of the torque transmission path which are to be connected to one another can be realized in the closed state.
  • This clutch is advantageously designed as a normally closed clutch.
  • normally open clutch or else a clutch which stays in its respective clutch position in the unoperated state, that is to say as a so-called normally stay clutch, should not be precluded.
  • a step-up transmission for stepping up the torque which is provided by the torque converter is arranged in the torque transmission path between the torque converter and the output device.
  • this transmission to implement an unchangeable transmission ratio, that is to say to not be designed as a variable-speed transmission, but even this refinement should not be precluded from the implementation of the disclosure.
  • the torque converter is a Trilok converter.
  • the guide wheel is mounted on a freewheel, so that the converter automatically switches over to purely hydrodynamic coupling.
  • Said converter is configured in such a way that the guide wheel jointly rotates freely after the switchover, so that a torque can no longer be supported and the input and output torque are the same.
  • This embodiment of the torque converter additionally has the advantage that there is an only low installation space requirement for the torque converter, in particular with a torsional vibration damper being dispensed with.
  • the electrical drive unit furthermore comprises an electrically driveable pump which is flow-connected to the flow chamber of the torque converter for the purpose of ensuring a minimum pressure of a fluid in the flow chamber of the torque converter or for assisting in implementing a minimum pressure of a fluid in the flow chamber of the torque converter.
  • the pump is accordingly driven by an electric pump motor which is provided separately.
  • the electrical drive unit furthermore comprises a mechanically driveable pump which is mechanically coupled to the pump impeller or to the turbine wheel of the torque converter and is flow-connected to the flow chamber of the torque converter for the purpose of ensuring a minimum pressure of a fluid in the flow chamber of the torque converter or for assisting in implementing a minimum pressure of a fluid in the flow chamber of the torque converter.
  • the torque converter itself comprises a pump which is mechanically connected to the pump impeller or to the turbine wheel of the torque converter, and accordingly is driven by the torque converter, for ensuring a minimum pressure of a fluid in the flow chamber of the torque converter or for assisting in implementing a minimum pressure of a fluid in the flow chamber of the torque converter.
  • the pump serves to supply the torque converter with fluid, in particular with oil, as a result of which cooling of the torque converter is implemented at the same time.
  • the electrical drive unit can be configured in such a way that operation of the clutch can be implemented by the pump.
  • the electrical drive unit furthermore comprises a cooling circuit which is designed to dissipate heat from the electrical drive machine and also from the torque converter.
  • the electrical drive machine and also the torque converter are constituent parts of the same cooling circuit, and therefore further assemblies of the cooling circuit are accordingly efficiently used.
  • this common cooling circuit has the advantage that operation-related heating phenomena occur alternately with respect to time in the electrical drive machine and also in the torque converter, so that reliable cooling of both assemblies is ensured by the common cooling circuit with a low level of expenditure on equipment.
  • the electrical drive unit furthermore comprises a first cooling circuit 38 which is designed to dissipate heat from the electrical drive machine, and/or comprises a second cooling circuit 39 which is designed to dissipate heat from the torque converter.
  • the performance of a respective cooling circuit 38 , 39 can be optimally matched to the thermal conditions prevailing on or in the electrical drive device and to the thermal conditions prevailing in or on the torque converter.
  • the pump also called the oil pump
  • the pump can be a constituent part of the cooling circuit in which the torque converter is incorporated.
  • the electrical drive machine is also incorporated in this cooling circuit, and therefore the pump also serves to cool the electrical drive machine indirectly.
  • the electrical drive unit furthermore comprises a lubrication system by way of which lubricant can be supplied to the step-up transmission, where the pump for generating a lubricant volumetric flow is a constituent part of the lubrication system.
  • the pump which is associated with the torque converter has a multiple function, specifically of supplying the torque converter, possibly assisting the cooling function and also supplying the step-up transmission with lubricant.
  • the disclosure provides a drive arrangement for an electrically at least partially driveable motor vehicle, which drive arrangement comprises an electrical drive unit according to the disclosure, where the drive arrangement furthermore has an axle which is mechanically coupled to the output device.
  • the output device is embodied, in particular, as an output shaft, the rotation axis of which corresponds substantially to the torque transmission path of the electrical drive unit according to the disclosure.
  • said drive arrangement furthermore comprises a differential transmission, which is mechanically coupled to the output device of the electrical drive unit at one end and is mechanically coupled to the axle at the other end, for the purpose of torque transmission from the electrical drive unit to the axle.
  • FIG. 1 shows a schematic illustration of a drive arrangement according to the disclosure comprising a drive unit according to the disclosure.
  • the drive arrangement 2 comprises an electrical drive unit 1 , a differential transmission 32 which is mechanically coupled to the electrical drive unit 1 , and also an axle 33 which is coupled to the differential transmission 32 and on which vehicle wheels 34 are arranged in a rotationally fixed manner.
  • the electrical drive unit 1 comprises an electrical drive machine 10 , which is substantially an electric motor, a torque converter 20 and also an output device 31 which implements the mechanical coupling between the electrical drive unit 1 and the differential transmission 32 , so that torque which is provided by the electrical drive machine 10 can be transmitted to the vehicle wheels 34 .
  • a first torque transmission path between the electrical drive unit 10 and the output device 31 is implemented via the torque converter 20 .
  • a clutch 25 is arranged parallel to the torque converter 20 .
  • a second torque transmission path between the electrical drive machine 10 and the output device 31 can be implemented via this clutch 25 , where the clutch 25 is designed to open or to disconnect the second torque transmission path.
  • the electrical drive machine 10 has a rotor 11 and also a stator 12 , wherein the rotor 11 is arranged such that it can rotate relative to the stator 12 and is mechanically coupled to an input side 28 of the torque converter 20 and, respectively, to an input side 29 of the clutch 25 for transmitting torque.
  • a step-up transmission 30 is arranged downstream of the torque converter 20 and, respectively, downstream of the clutch 25 in the torque transmission path between the electrical drive machine 10 and the output device 31 , for stepping up torque which is provided by the torque converter 20 and/or by the clutch 25 .
  • the torque converter 20 comprises a pump impeller 21 , a trubine wheel 22 , a guide wheel 23 and also a freewheel 24 . In respect of its design and its functioning, the torque converter 20 therefore corresponds substantially to a so-called TRILOK converter.
  • the guide wheel 23 is mounted on the freewheel 24 , so that the torque converter 20 automatically switches over to purely hydrodynamic coupling.
  • Said torque converter is configured in such a way that the guide wheel 23 jointly rotates freely after the switchover, so that a torque can no longer be supported and the input and output torque are the same.
  • the pump impeller 21 is mechanically coupled to the rotor 11 of the electrical machine 10
  • the turbine wheel 22 is mechanically coupled to the step-up transmission 30 .
  • the torque converter 20 can be operated in a so-called slip mode, where the rotation speed of the pump impeller 21 can be increased on account of torque differences which occur between the two wheels 21 , 22 . Accordingly, a correspondingly increased torque can be provided at the turbine wheel 22 . Therefore, it is possible to respond to a torque requirement at the output device 31 and, respectively, the vehicle wheels 34 in a simple manner by adjusting the torque converter 20 and, respectively, to also provide an increased torque due to relatively high rotation speeds of the electrical drive machine 10 .
  • the clutch 25 is configured in a normally closed clutch form 26 .
  • An alternative which is embodied by a normally open clutch form 27 of the clutch 25 is illustrated using dashed lines.
  • FIG. 1 shows a pump 40 , 41 .
  • Said pump is embodied either as an electrically driveable pump 40 which can be driven by an electric pump motor 43 ; or as a mechanically driveable pump 41 which can be driven by torque which is provided by the electrical drive machine 10 .
  • the pump 40 , 41 is designed to ensure the supply of the torque converter 20 with fluid, in particular with oil, and therefore to ensure a minimum pressure of a fluid in the flow chamber of the torque converter 20 or to assist in realizing a minimum pressure of this kind.
  • cooling of the torque converter 20 is realized by the pump 40 , 41 .
  • the pump 40 , 41 can be used for operating the clutch 25 .
  • the pump 40 , 41 is part of a lubrication system 42 by way of which lubricant can be supplied to the step-up transmission 30 .
  • torque which is provided by the electrical drive machine 10 can be transmitted to the step-up transmission 30 via the torque converter 20 or the clutch 25 and then to the differential transmission 32 by the output device 31 and can be transmitted from there to the axle 33 and finally to vehicle wheels 34 .
  • the torque which is provided by the electrical drive machine 10 can be transmitted firstly via the torque converter 20 and, if required, directly via the clutch 25 , a further torque range can be covered by the electrical drive unit 1 according to the disclosure than is provided by the electrical drive machine 10 alone owing to the torque variation by the torque converter 20 .
  • the refinement according to the disclosure of the electrical drive unit and a drive arrangement proposed here renders it possible to combine a wide range of applications of the electrical drive machine with optimum driving operation of a motor vehicle which is equipped with said electrical drive machine with a low investment requirement.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Power Engineering (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Arrangement Of Transmissions (AREA)
US16/677,398 2018-11-07 2019-11-07 Electrical drive unit and also drive arrangement for an electrical drive unit Active 2040-04-19 US11440390B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018127710.5A DE102018127710A1 (de) 2018-11-07 2018-11-07 Elektrische Antriebseinheit sowie Antriebsanordnung für eine elektrische Antriebseinheit
DE102018127710.5 2018-11-07

Publications (2)

Publication Number Publication Date
US20200139801A1 US20200139801A1 (en) 2020-05-07
US11440390B2 true US11440390B2 (en) 2022-09-13

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DE (1) DE102018127710A1 (de)

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DE102020116161A1 (de) * 2020-06-18 2021-12-23 Audi Aktiengesellschaft Wechselrichter
EP4295060A1 (de) * 2021-02-18 2023-12-27 Alpraaz AB Antriebsstrang für ein elektrofahrzeug
CN116198314A (zh) * 2021-11-30 2023-06-02 通用汽车环球科技运作有限责任公司 电气化推进系统和设备

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